Codes used in several countries
40 on a licence plate
40 is an area code in 3 countries. The plate's style and country code tell them apart.
France
1234 AB 40Code details →Landes (Nouvelle-Aquitaine)
Russia
А 123 ВС 40Code details →Kaluga Oblast (Central Federal District)
Türkiye
4034 ABC 123Code details →Kırşehir